مشخصات پژوهش

صفحه نخست /Effects of ...
عنوان Effects of polyethyleneimine-functionalized MCM-41 on flameretardancy and thermal stability of polyvinyl alcohol
نوع پژوهش مقاله چاپ‌شده
کلیدواژه‌ها Nanocompositeو PVA وNanofiller وMCM-41
چکیده Hyperbranched polyethylenimine (PEI)-functionalized mesoporous silica (MCM@PEI) was synthesizedand used to produce poly(vinyl alcohol) (PVA) nanocomposites. The modified nanofiller was charac-terized with infrared spectroscopy, thermogravimetric analysis, X-ray diffraction, scanning electronmicroscopy, transmission electron microscopy, and N2adsorption. When compared with pure meso-porous silica (MCM), the MCM@PEI nanoparticles exhibited better dispersion in the PVA matrix. Theeffects of MCM@PEI on the thermal and flame properties of PVA nanocomposites were also studied.Improvement in the thermal properties was confirmed by enhanced thermal stability and char yield.Incorporation of MCM@PEI in PVA led to a significant drop in the heat release rate and the total heatrelease.
پژوهشگران خلیل فقیهی (نفر پنجم)، حسین علی خنکدر (نفر چهارم)، میثم شعبانیان (نفر اول)، فریده همتی (نفر سوم)، مهدی خوبی (نفر دوم)، اودو واگن نچت (نفر ششم به بعد)، سید اسماعیل سعادت ابراهیمی (نفر ششم به بعد)، عباس شفیعی (نفر ششم به بعد)